Y edau sgriw metrig ISO yw'r math mwyaf cyffredin o edau sgriw cyffredinol yn fyd-eang, Mae'r dynodiad "M" ar gyfer sgriwiau metrig yn dangos diamedr allanol enwol y llinyn sgriw, mewn milimetr. dau fath o edau bras lleiniau llinyn a llinyn sgriw cain.
Mae ISO 261 yn nodi rhestr fanwl o gyfuniadau a ffefrir o ddieeter D allanol a llain P ar gyfer edau sgriw metrig ISO. Mae'r golofn dewis 1af yn dilyn (tua) y gyfres R10 o ISO 3, tra bod y golofn ail ddewis wedi'i thalgrynnu o'r gyfres R20 o ISO 3.
Mae ISO 262 yn nodi rhestr fyrrach o ddimensiynau edau – is-set o ISO 261.
MEINTIAU dethol ISO 262 ar gyfer sgriwiau, bolltau a chnau
Diamedr nominal | Llain | ||
1af | 2il | Bras | Ddirwy |
1 | 0.25 | 0.2 | |
1.2 | 0.25 | 0.2 | |
1.4 | 0.3 | 0.2 | |
1.6 | 0.35 | 0.2 | |
1.8 | 0.35 | 0.2 | |
2 | 0.4 | 0.25 | |
2.5 | 0.45 | 0.35 | |
3 | 0.5 | 0.35 | |
3.5 | 0.6 | 0.35 | |
4 | 0.7 | 0.5 | |
0.8 | 0.5 | ||
5.5DIN13 | 0.9 | 0.5 | |
1 | 0.75 | ||
7 | 1 | 0.75 | |
1.25 | 1or0.75 | ||
10 | 1.5 | 1.25or1 | |
12 | 1.75 | 1.5or1.25 | |
14 | 2 | 1.5 | |
16 | 2 | 1.5 | |
|18 | 2.5 | 2or1.5 | |
20 | 2.5 | 2or1.5 | |
22 | 2.5 | 2or1.5 | |
24 | 3 | 2 | |
27 | 3 | 2 | |
30 | 3.5 | 2 | |
33 | 3.5 | 2 | |
36 | 4 | 3 | |
39 | 4 | 3 | |
42 | 4.5 | 3 | |
45 | 4.5 | 3 | |
48 | 5 | 3 | |
52 | 5 | 4 | |
56 | 5.5 | 4 | |
|60 | 5.5 | 4 | |
64 | 6 | 4 | |
Meintiau Spanner (llongddrylliad) mm
Isod ceir rhai meintiau sbin cyffredin (llongddrylliad) ar gyfer edau sgriw metrig. Mae gweddau pen Hex (lled ar draws fflatiau, maint spanner) ar gyfer cnau hex RhYC a bollt pen hecs. Gall meintiau eraill (llai fel arfer) ddigwydd am resymau pwysau a lleihau costau.
| | | | | |
Maint | Iso | Din | |||
M1 | - | 2.5 | - | - | - |
M1.2 | - | 3 | - | - | - |
M1.4 | - | 3 | 1.25 | - | 0.7 |
M1.6 | 3.2 | 3.2 | 1.5 | 0.9 | 0.7 |
M2 | 4 | 4 | 1.5 | 1.25 | 0.9 |
M2.5 | 5 | 5 | 2 | 1.5 | 1.3 |
M3 | 5.5 | 5.5 | 2.5 | 2 | 1.5 |
M3.5 | 6 | 6 | - | - | - |
Yr M4 | 7 | 7 | 3 | 2.5 | 2 |
M5 | 8 | 8 | 4 | 3 | 2.5 |
M6 | 10 | 10 | 5 | 4 | 3 |
M7 | 11 | 11 | - | - | - |
M8 | 13 | 13 | 6 | 5 | 4 |
M10 | 16 | 17 | 8 | 6 | 5 |
M12 | 18 | 19 | 10 | 8 | 6 |
M14 | 21 | 22 | 10 | - | - |
M16 | 24 | 24 | 14 | 10 | 8 |
M18 | 27 | 27 | 14 | 12 | - |
M20 | 30 | 30 | 17 | 12 | 10 |
M22 | 34 | 32 | 17 | 14 | - |
M24 | 36 | 36 | 19 | 14 | 12 |
M27 | 41 | 41 | 19 | 17 | 14 |
M30 | 46 | 46 | 22 | 17 | 14 |
M33 | 50 | 50 | 24 | - | - |
M36 | 55 | 55 | 27 | - | - |
M39 | 60 | 60 | - | - | - |
Yr M42 | 65 | 65 | 32 | - | - |
Yr M45 | 70 | 70 | - | - | - |
Yr M48 | 75 | 75 | 36 | - | - |
M52 | 80 | 80 | 36 | - | - |
Yr M56 | 85 | 85 | 41 | - | - |
M60 | 90 | 90 | - | - | - |
M64 | 95 | 95 | 46 | - | - |
